Gasco-Siltronic Photo Gallery | Region 10 | US EPA

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Gasco-Siltronic Photo Gallery

View photos of data gap collection activities - Fall 2010 EPA's Third Party Web Site Disclaimer

2010 Capture Zone Field Investigation
Straw waddle placed at PW-9/OW-9 site along the edge of the slope down to the river bank to prevent muddy water at the drill site migrating down the bank, March 8, 2010.
Driller checking depth of sand filter pack at OW-9. Pumping well PW-9 (8-inch diameter steel stickup casing with bolted on wood cover) is visible in foreground of photo, March 8, 2010.
Drillers installing 8-inch diameter stainless steel screen at PW-9, March 2, 2010.
Close-up of 8-inch diameter stainless steel screen with 2.2-foot end sump at PW-9, March 2, 2010. St. John's bridge is in the background (looking downriver).
Overview of PW-9 work area next to the riverbank, February 24, 2010. Behind the drill rig the river is visible; photo is looking east.
Sample from 9-12 feet bgs at MW-23 showing lampblack- sooty material, February 4, 2010.
Anchor QEA taking photo ionization detector (PID) reading in drillers’ breathing zone at MW-23. Drillers are extruding a soil core form the Sonic core sampler into a plastic sample bag, February 4, 2010.
MW-23 work area showing exclusion zone established with tape and rigid barriers; boot wash is located in contaminant reduction zone, February 4, 2010.
Water holding “pond” used to contain decontamination water from well installation work, January 28, 2010. Railroad bridge can be seen in the background.
Driller using pressure washer to decontaminate drill pipe, January 28, 2010. St. John's bridge in the background.
Activated carbon water treatment system at Gasco site, January 28, 2010. The system is being used to treat decontamination water from monitoring well installation. View is looking towards Forest Park.
Contamination reduction zone (CRZ) with boot wash upon exit of exclusion zone at MW-22 location, January 27, 2010. Photo is looking riverward from the site.
2-inch diameter slotted PVC well screen intended for MW-22 monitoring well, January 27, 2010.
Assembling screen and PVC casing to construct MW-22 monitoring well, January 27, 2010. St. Johns bridge in the background (looking downriver).
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Show details for 2009 Capture Zone Field Investigation2009 Capture Zone Field Investigation


Show details for Summer / Fall 2005 - Removal of the tar deposit - 15,300 cubic yards of pure tar were removed from the WillameSummer / Fall 2005 - Removal of the tar deposit - 15,300 cubic yards of pure tar were removed from the Willamette River


Show details for Fall 2004 Round 2 RI/FS GASCO Sampling (outside Tar Body)Fall 2004 Round 2 RI/FS GASCO Sampling (outside Tar Body)


Show details for July 2004 GASCO Tar Body SamplingJuly 2004 GASCO Tar Body Sampling


Show details for July 2003 photos of the shoreline area subject to the 2004 Removal Action (pre-removal). Photos courtesy of OrJuly 2003 photos of the shoreline area subject to the 2004 Removal Action (pre-removal). Photos courtesy of Oregon DEQ.


Show details for GASCO Historical PhotosGASCO Historical Photos


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